CVE - CVE-2024-27437

CVE-ID
CVE-2024-27437	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Disable auto-enable of exclusive INTx IRQ Currently for devices requiring masking at the irqchip for INTx, ie. devices without DisINTx support, the IRQ is enabled in request_irq() and subsequently disabled as necessary to align with the masked status flag. This presents a window where the interrupt could fire between these events, resulting in the IRQ incrementing the disable depth twice. This would be unrecoverable for a user since the masked flag prevents nested enables through vfio. Instead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx is never auto-enabled, then unmask as required.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060 URL:https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060 MISC:https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351 URL:https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351 MISC:https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2 URL:https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2 MISC:https://git.kernel.org/stable/c/3b3491ad0f80d913e7d255941d4470f4a4d9bfda URL:https://git.kernel.org/stable/c/3b3491ad0f80d913e7d255941d4470f4a4d9bfda MISC:https://git.kernel.org/stable/c/561d5e1998d58b54ce2bbbb3e843b669aa0b3db5 URL:https://git.kernel.org/stable/c/561d5e1998d58b54ce2bbbb3e843b669aa0b3db5 MISC:https://git.kernel.org/stable/c/b7a2f0955ffceffadfe098b40b50307431f45438 URL:https://git.kernel.org/stable/c/b7a2f0955ffceffadfe098b40b50307431f45438 MISC:https://git.kernel.org/stable/c/bf0bc84a20e6109ab07d5dc072067bd01eb931ec URL:https://git.kernel.org/stable/c/bf0bc84a20e6109ab07d5dc072067bd01eb931ec MISC:https://git.kernel.org/stable/c/fe9a7082684eb059b925c535682e68c34d487d43 URL:https://git.kernel.org/stable/c/fe9a7082684eb059b925c535682e68c34d487d43
Assigning CNA
kernel.org
Date Record Created
20240225	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240225)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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